PMP10543 Reference Design

Texas Instruments

Low Profile Quad Output Isolated Fly-Buck Power Supply for Industrial Applications

Description

The PMP10543 reference design is a low profile quad output isolated Fly-Buck power supply for industrial applications.  The power supply has a synchronous buck regulator: LM5017: and a low profile (6mm) transformer. It generates four isolated outputs of ±5V: ±12V: 75mA each.  The LM5017 is a 100V wide Vin: 600mA synchronous buck regulator.  The input voltage range of the design is 20V to 32V: making it suitable for 24V input industrial application.  The Fly-Buck can regulate the secondary side outputs without opto-coupler or aux winding and is capable of achieving good cross regulation within ±5%.  With LM5017's constant on-time control: no loop compensation is required: which simplifies the design and helps reducing the external part count and BOM cost.

Features
  • Multiple isolated bias power using Fly-Buck: ideal for PLC and industrial applications 2.5W output power: +/-12V: +/-5V @ 75mA each: with LM5017 capable of 7.5V to 100V input Primary side regulation without opto: good cross regulation within +/-5% 6mm low profile transformer Constant on-time control: no loop compensation required: and fast transient response This circuit board is tested: and the design files and test report are included.
Applications
  • Trackside signaling & control
Product Categories
  • Power management

Parts

Part Number Name Companion Part
LM5017 LM5017 Buy Datasheet

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP10543 Gerber 24 Oct 2014 ZIP 72
PMP10543 CAD Files 24 Oct 2014 ZIP 329
PMP10543 PCB 24 Oct 2014 PDF 191
PMP10543 BOM 24 Oct 2014 PDF 212
PMP10543 Schematic 24 Oct 2014 PDF 112